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audispd-llist.c

/*
* audispd-llist.c - Minimal linked list library
* Copyright (c) 2007 Red Hat Inc., Durham, North Carolina.
* All Rights Reserved. 
*
* This software may be freely redistributed and/or modified under the
* terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Authors:
*   Steve Grubb <sgrubb@redhat.com>
*/

#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "audispd-llist.h"

void plist_create(conf_llist *l)
{
      l->head = NULL;
      l->cur = NULL;
      l->cnt = 0;
}

void plist_last(conf_llist *l)
{
        register lnode* window;
      
      if (l->head == NULL)
            return;

        window = l->head;
      while (window->next)
            window = window->next;
      l->cur = window;
}

lnode *plist_next(conf_llist *l)
{
      if (l->cur == NULL)
            return NULL;
      l->cur = l->cur->next;
      return l->cur;
}

void plist_append(conf_llist *l, plugin_conf_t *p)
{
      lnode* newnode;

      newnode = malloc(sizeof(lnode));

      if (p) {
            void *pp = malloc(sizeof(struct plugin_conf));
            if (pp) 
                  memcpy(pp, p, sizeof(struct plugin_conf));
            newnode->p = pp;
      } else
            newnode->p = NULL;

      newnode->next = 0;

      // if we are at top, fix this up
      if (l->head == NULL)
            l->head = newnode;
      else  // Otherwise add pointer to newnode
            l->cur->next = newnode;

      // make newnode current
      l->cur = newnode;
      l->cnt++;
}

void plist_clear(conf_llist* l)
{
      lnode* nextnode;
      register lnode* current;

      current = l->head;
      while (current) {
            nextnode=current->next;
            free(current->p);
            free(current);
            current=nextnode;
      }
      l->head = NULL;
      l->cur = NULL;
      l->cnt = 0;
}

void plist_mark_all_unchecked(conf_llist* l)
{
      register lnode* current;

      current = l->head;
      while (current) {
            if (current->p)
                  current->p->checked = 0;
            current=current->next;
      }
}

lnode *plist_find_unchecked(conf_llist* l)
{
      register lnode* current;

      current = l->head;
      while (current) {
            if (current->p && current->p->checked == 0)
                  return current;
            current=current->next;
      }
      return NULL;
}

lnode *plist_find_name(conf_llist* l, const char *name)
{
      register lnode* current;

      if (name == NULL)
            return NULL;

      current = l->head;
      while (current) {
            if (current->p && current->p->name) {
                  if (strcmp(current->p->name, name) == 0)
                        return current;
            }
            current=current->next;
      }
      return NULL;
}


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